The Wooded Custard-apple is a solemn poetic form intended to make an apology concerning nature, originating in The Custom of Shoulders. The rules of the form are applied by poets to produce individual poems which can be recited. The poem is a single tercet. Use of metaphor is characteristic of the form. Forms of parallelism are common throughout the poem, in that certain lines often contrast underlying meaning and they have similar grammatical structures. The ending of each line of the poem shares the same rhyme. The first line must make use of consonance. It has eight syllables. The second line must make use of consonance. It has five syllables. The third line has eight syllables.